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H. E. SHAFFER.

LAMP BURNER.

No. 358,892. Patented Mar. 8, 1887.

UNITED STATES PATENT OFFICE.

HENRY E. SHAFFER, OF ROCHESTER, NEYV YORK.

LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 358,892, dated March 8,1887.

Application filed March 12, 1886.

.To aZZ whom it may concern:

Be it known that I, HENRY E. SHAFFER, of the city of Rochester, in thecounty of Monroe and State of New York, have invented a certain new anduseful Improvement in Burners; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had tothe drawings accour panying this application.

My improvement relates to that class of lamp-burners in which two ormore separate and independent wick-tubes and two or more separate conesare employed for the purpose of producing more light than a single flamecan produce.

It also relates to that class of burners in which the wick-tubes arebent vertically, so as to enable their lower ends to come within thecompass of the screw-collar of ordinary size that screws into the top ofthe lamp,

Burners of the general character above described are well known. In allburners of this kind with which I am acquainted the tops of thewick-tubes are made straight, and as the cones have to be located atsome distance apart such straight-topped wick-tubes have to be madenarrow, for the reason that they are located some distance from thecenter and toward the outer edge of the circular burner, andconsequently the amount of straight wicksurface, in width, iscomparatively small.

It is the object of my invention to increase the width of thewick-surface in this class of lamps by the employment of bent wicktubeswith their upper or top ends curved, and the use of independent curvedcones that cover the wick-tubes, as hereinafter more fully described.

In the drawings, Figure 1 is a plan view of a burner showing myinvention. Fig. 2 is a central vertical section in line m w of Fig. 1.Fig. 3 is a cross-section of one of the wicktubes in line y 3 of Fig. 2.Fig. i is a similar section in line a z of Fig. 2.

A indicates the burner, which may be of any desired form, and providedwith a screw-collar, a, that screws into the stationary collar of thelamp in the usual way.

My improvement is as follows:

E B are two or more wick-tubes, which in vertical length are bent, asshown, so that the upper ends will be spread apart as far as the SerialNo. 194,973. (No model.)

cones will allow and the lower ends will be brought toward each other,so as to come within the compass of the ordinarysized screwcollar a. Theupper ends of these wick-tubes, above the perforated plate I), stand ina vertical line, so as to come properly under the slots of the cones.These straight upper ends of the wick-tubes are curved in cross-section,as shown in Fig. 3, the curve being concentric, or nearly so, with thecircular outline of the burner. That portion of the wick-tube thatextends below the perforated plate I) is prefeFrably straight incross-section, as shown in O O are two or more separate cones attachedto or forming a part of the cone-plate D and covering the ends of thewick-tubes. These cones are also curved in outline, correspond ing withthe tops of the wick-tubes, and are provided with curved slots 0 c, toallow passage of the draft, as in other lamps. The outer sides of thecones come to the outer edges of the cone-plate,.or nearly so, while theinner sides curve from each other and are at such a distance apart as toleave a hollow space, d, of such capacity as to form an air-chamberbetween the cones for feeding the blaze at that point where it is mostdiflicult to supply air.

ff are perforations through the coneplate by which air is fed into thespace between the cones.

By the construction above described the following advantages aresecured: The wick-tubes are so far separated at the top that the lightscome near the outer edge of the burner and throw the rays downwardwithout obstruction by the sides of the burner. The curved form of thetop of the wick-tubes enables them to be made of any desired width,which cannot be done if the tops are straight. Much greater wiclrsurfacecan therefore be obtained in a burn-er of given size. The curved form ofthe cones produces a hollow air-chamber between them at the point wherethere is the most heat and concentrates and holds the air and feeds itto the inner walls of the flames. By this construction, also, there isless danger of breaking or smoking the chimney, as the side, and not theedges of the flame, comes toward the chimney. It has been demonstratedby practice that it is only by the edges of the blaze coming too nearthe chimney that smoke attaches itself to the chimney, whereas thecurved blaze may run up close to the glass and the chimney continueclean without the least smoke attaching itself thereto. v

Having described my invention, I do not claim, broadly, two or moreseparate wicks and cones; neither do I claim, broadly, two or morewick-tubes curved in their vertical length; nor do I claim, broadly, twoor more wick-tubes with tops curved in cross-section.

What I claim as new is- 1. The combination, with the burner, of two ormore wick-tubes bent in vertical direction and curved at their tops tofollow the circle of the burner, and two or more independent conescorrespondingly curved and covering the wick-tubes, as and for thepurpose specified.

HENRY E. SHAFFER.

\Vitnesses:

B. F. OSGOOD, P. A.-COSTICH.

